Digest dir

digest_dir.sh

#!/usr/bin/env bash
# Return a recursive digest of all files in the current directory, including modified ones.

set -eo pipefail

# ensure we're in a git repo and running from its root.
cd "$(git rev-parse --show-toplevel)"

# If the repo is completely clean, we can just print the current tree OID.
if [ -z "$(git status --porcelain)" ]; then
  git rev-parse HEAD:
  exit 0
fi

# Otherwise, we will hash all files into a temporary index.
TMPINDEX=$(mktemp)
trap 'rm -f "$TMPINDEX"' EXIT

rm -f "$TMPINDEX"
export GIT_INDEX_FILE=$TMPINDEX
git add . && git ls-files -s | shasum |  cut -d' ' -f1